CN106750794A - A kind of high molecular PTC electricity heating composite and preparation method thereof - Google Patents

A kind of high molecular PTC electricity heating composite and preparation method thereof Download PDF

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Publication number
CN106750794A
CN106750794A CN201611181491.XA CN201611181491A CN106750794A CN 106750794 A CN106750794 A CN 106750794A CN 201611181491 A CN201611181491 A CN 201611181491A CN 106750794 A CN106750794 A CN 106750794A
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mentioned
electricity heating
high molecular
minutes
heating composite
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葛吉平
张浩杰
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Ningbo Aike Chuangwei New Mstar Technology Ltd
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Ningbo Aike Chuangwei New Mstar Technology Ltd
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Priority to CN201611181491.XA priority Critical patent/CN106750794A/en
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00Properties characterising the ingredient of the composition
    • C08L2207/06Properties of polyethylene
    • C08L2207/066LDPE (radical process)

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts:Ethylene-vinyl acetate copolymer 60 70, low density polyethylene (LDPE) 80 90, graphite 20 30, p-methyl benzenesulfonic acid 1.5 1.8,2,4,6 tri-butyl-phenols 0.7 1, vermiculite power 79, polypropylene nucleater 1 1.2, Silane coupling agent KH550 35, anti-scorching agent CTP 0.3 0.5, aluminium nitride 20 30, antioxidant 1010 0.7 1, bentonite 23 30, N, N dimethylformamides 0.7 2.Present invention repeatability with relatively low room temperature resistivity, the electric conductivity of stabilization, PTC intensity higher and weaker NTC effects and preferably.

Description

A kind of high molecular PTC electricity heating composite and preparation method thereof
Technical field
The present invention relates to a kind of composite, more particularly to a kind of electricity heating of high molecular PTC composite and its preparation side Method.
Background technology
PTC polymer heating materials are widely used in communicating, count as overheat, overcurrent protection and temp auto-controlled heating material In the various fields such as calculation machine, automobile, Industry Control, household electrical appliance.Current organic PTC material is due to formula and processing technology It is unreasonable, room temperature resistance wider distribution is primarily present, the problems such as PTC intensity is small, stability is relatively low.
The content of the invention
Defect and deficiency it is an object of the invention to be directed to prior art, there is provided a kind of high molecular PTC electricity heating is compound Material and preparation method thereof, its have relatively low room temperature resistivity, stabilization electric conductivity, weaker NTC effects and preferably Repeatability.
To achieve the above object, the present invention uses following technical scheme.
A kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts:Ethyl vinyl acetate second Alkene copolymer 60-70, low density polyethylene (LDPE) 80-90, graphite 20-30, p-methyl benzenesulfonic acid 1.5-1.8,2,4,6- tri-butyl benzene Phenol 0.7-1, vermiculite power 7-9, polypropylene nucleater 1-1.2, Silane coupling agent KH550 3-5, anti-scorching agent CTP 0.3-0.5, nitrogen Change aluminium 20-30, antioxidant 1010 0.7-1, bentonite 23-30, DMF 0.7-2.
Further, it is made up of the raw material of following weight parts:Ethylene-vinyl acetate copolymer 65, low-density gathers Ethene 85, graphite 26, p-methyl benzenesulfonic acid 1.7,2,4,6- tri-butyl-phenols 0.8, vermiculite power 8, polypropylene nucleater 1.1, silicon Alkane coupling agent KH550 4, anti-scorching agent CTP 0.4, aluminium nitride 23, antioxidant 1010 0.9, bentonite 27, N, N- dimethyl formyls Amine 1.3.
A kind of preparation method of high molecular PTC electricity heating composite, comprises the following steps:
(1)Above-mentioned bentonite is calcined 1-2 hours at 600-670 DEG C, normal temperature is cooled to, fine powder is worn into, with above-mentioned N, N- bis- NMF is sufficiently mixed, and is added in the distilled water of 60-70 times of compound weight, rises high-temperature to 60-70 DEG C, and insulation is stirred Mix 10-15 minutes, add above-mentioned vermiculite power, continue to stir to normal temperature, obtain acid amides dispersion liquid;
(2)Above-mentioned graphite, aluminium nitride are mixed, is added in the distilled water of 50-70 times of compound weight, be made suspension;
(3)Above-mentioned p-methyl benzenesulfonic acid will be taken, will be added in the deionized water of 170-200 times of its weight, stirred, be sent to In 50-60 DEG C of water-bath, insulated and stirred 14-20 minutes, discharging added above-mentioned suspension, and ultrasonic 20-30 minutes, filtering will be heavy Form sediment and be vacuum dried 1-2 hours at 50-60 DEG C, obtain acidifying carbon dust
(4)Above-mentioned acid amides dispersion liquid, acidifying carbon dust and remaining each raw material are mixed, gamma-rays is passed through and is processed 10-15 minutes, drying And molten condition is heated to, and knead 30-45 minutes, extruding pelletization, that is, obtain the PTC electricity heating composite.
Advantages of the present invention is:
PTC electricity heating composites prepared by the present invention, can occur double using two kinds of polymer as matrix, in course of reaction Percolation, improves the reappearance of material resistance;Processed using gamma-rays during being mixed with so that complex The NTC effects of system are substantially reduced, and also improve thermal cycle and the electro-thermal equilibrium temperature reappearance of system;Add 2,4,6- tri- Tert-butyl phenol so that composite be electrified for a long time stability and break-make electrical stability is improved repeatedly, and 2,4,6- Tri-butyl-phenol also serves the effect of lubricious polymeric thing in process;.
Specific embodiment
The following is embodiments of the invention one.
A kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts:Ethyl vinyl acetate second Alkene copolymer 60, low density polyethylene (LDPE) 80, graphite 20, p-methyl benzenesulfonic acid 1.5,2,4,6- tri-butyl-phenols 0.7, vermiculite power 7, Polypropylene nucleater 1, Silane coupling agent KH550 3, anti-scorching agent CTP 0.3, aluminium nitride 20, antioxidant 1010 0.7, bentonite 23rd, DMF 0.7.
The following is embodiments of the invention two.
A kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts:Ethyl vinyl acetate second Alkene copolymer 65, low density polyethylene (LDPE) 85, graphite 26, p-methyl benzenesulfonic acid 1.7,2,4,6- tri-butyl-phenols 0.8, vermiculite power 8, Polypropylene nucleater 1.1, Silane coupling agent KH550 4, anti-scorching agent CTP 0.4, aluminium nitride 23, antioxidant 1010 0.9, swelling Soil 27, DMF 1.3.
The following is embodiments of the invention three.
A kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts:Ethyl vinyl acetate second It is alkene copolymer 70, low density polyethylene (LDPE) 90, graphite 30, p-methyl benzenesulfonic acid 1.8,2,4,6- tri-butyl-phenols 1, vermiculite power 9, poly- Propylene nucleator 1.2, Silane coupling agent KH550 5, anti-scorching agent CTP 0.5, aluminium nitride 30, antioxidant 1010 1, bentonite 30, DMF 2.
A kind of preparation method of high molecular PTC electricity heating composite as claimed in claim 1, comprises the following steps:
(1)Above-mentioned bentonite is calcined 2 hours at 670 DEG C, normal temperature is cooled to, fine powder is worn into, with above-mentioned N, N- dimethyl methyls Acid amides is sufficiently mixed, and is added in the distilled water of 65 times of compound weight, rises high-temperature to 65 DEG C, insulated and stirred 15 minutes, plus Enter above-mentioned vermiculite power, continue to stir to normal temperature, obtain acid amides dispersion liquid;
(2)Above-mentioned graphite, aluminium nitride are mixed, is added in the distilled water of 55 times of compound weight, be made suspension;
(3)Above-mentioned p-methyl benzenesulfonic acid will be taken, will be added in the deionized water of 180 times of its weight, stirred, be sent to 55 DEG C In water-bath, insulated and stirred 17 minutes, discharging adds above-mentioned suspension, ultrasound 25 minutes, filtering, vacuum at being deposited in 55 DEG C Dry 1 hour, obtain acidifying carbon dust;
(4)Above-mentioned acid amides dispersion liquid, acidifying carbon dust and remaining each raw material are mixed, and is passed through gamma-rays treatment 15 minutes, then Molten condition is dried and be heated to, then is kneaded 45 minutes, extruding pelletization, that is, obtain the PTC electricity heating composite.

Claims (3)

1. a kind of high molecular PTC electricity heating composite, it is characterised in that it is made up of the raw material of following weight parts:Second Alkene-acetate ethylene copolymer 60-70, low density polyethylene (LDPE) 80-90, graphite 20-30, p-methyl benzenesulfonic acid 1.5-1.8,2,4,6- tri- Tert-butyl phenol 0.7-1, vermiculite power 7-9, polypropylene nucleater 1-1.2, Silane coupling agent KH550 3-5, anti-scorching agent CTP 0.3-0.5, aluminium nitride 20-30, antioxidant 1010 0.7-1, bentonite 23-30, DMF 0.7-2.
2. high molecular PTC according to claim 1 electricity heating composite, it is characterised in that it is by following weight parts Raw material composition:Ethylene-vinyl acetate copolymer 65, low density polyethylene (LDPE) 85, graphite 26, p-methyl benzenesulfonic acid 1.7,2,4,6- Tri-butyl-phenol 0.8, vermiculite power 8, polypropylene nucleater 1.1, Silane coupling agent KH550 4, anti-scorching agent CTP 0.4, nitridation Aluminium 23, antioxidant 1010 0.9, bentonite 27, DMF 1.3.
3. a kind of preparation method of high molecular PTC as claimed in claim 1 electricity heating composite, it is characterised in that including Following steps:
(1)Above-mentioned bentonite is calcined 1-2 hours at 600-670 DEG C, normal temperature is cooled to, fine powder is worn into, with above-mentioned N, N- bis- NMF is sufficiently mixed, and is added in the distilled water of 60-70 times of compound weight, rises high-temperature to 60-70 DEG C, and insulation is stirred Mix 10-15 minutes, add above-mentioned vermiculite power, continue to stir to normal temperature, obtain acid amides dispersion liquid;
(2)Above-mentioned graphite, aluminium nitride are mixed, is added in the distilled water of 50-70 times of compound weight, be made suspension;
(3)Above-mentioned p-methyl benzenesulfonic acid will be taken, will be added in the deionized water of 170-200 times of its weight, stirred, be sent to In 50-60 DEG C of water-bath, insulated and stirred 14-20 minutes, discharging added above-mentioned suspension, and ultrasonic 20-30 minutes, filtering will be heavy Form sediment and be vacuum dried 1-2 hours at 50-60 DEG C, obtain acidifying carbon dust;
(4)Above-mentioned acid amides dispersion liquid, acidifying carbon dust and remaining each raw material are mixed, gamma-rays is passed through and is processed 10-15 minutes, drying And molten condition is heated to, and knead 30-45 minutes, extruding pelletization, that is, obtain the PTC electricity heating composite.
CN201611181491.XA 2016-12-20 2016-12-20 A kind of high molecular PTC electricity heating composite and preparation method thereof Pending CN106750794A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108559158A (en) * 2018-05-10 2018-09-21 重庆新康意安得达尔新材料有限公司 A kind of low-density polymer composite
CN108877993A (en) * 2018-05-24 2018-11-23 江苏时瑞电子科技有限公司 A kind of High-strength PTC polymer conductive material and preparation method thereof
CN111403665A (en) * 2020-03-25 2020-07-10 石狮申泰新材料科技有限公司 Ceramic-coated lithium battery diaphragm and preparation method thereof
CN115403852A (en) * 2022-11-03 2022-11-29 山东寿光鲁清石化有限公司 Preparation method of conductive polyethylene special material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101597396A (en) * 2009-07-02 2009-12-09 浙江华源电热有限公司 Polymer-based positive temperature coefficient thermistor material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101597396A (en) * 2009-07-02 2009-12-09 浙江华源电热有限公司 Polymer-based positive temperature coefficient thermistor material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108559158A (en) * 2018-05-10 2018-09-21 重庆新康意安得达尔新材料有限公司 A kind of low-density polymer composite
CN108877993A (en) * 2018-05-24 2018-11-23 江苏时瑞电子科技有限公司 A kind of High-strength PTC polymer conductive material and preparation method thereof
CN111403665A (en) * 2020-03-25 2020-07-10 石狮申泰新材料科技有限公司 Ceramic-coated lithium battery diaphragm and preparation method thereof
CN115403852A (en) * 2022-11-03 2022-11-29 山东寿光鲁清石化有限公司 Preparation method of conductive polyethylene special material
CN115403852B (en) * 2022-11-03 2023-01-06 山东寿光鲁清石化有限公司 Preparation method of conductive polyethylene special material

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Application publication date: 20170531